Extended data
The average college credit grade point is calculated according to 4.0, and if it reaches 3.5 or above, it is considered excellent, which is a good result. Average credit grade point is a kind of calculation unit, which mainly measures the quantity and quality of students' learning by credit and grade point, takes certain credit and average credit grade point as the standard of graduation and degree, and implements various educational specifications and flexible teaching management systems. The calculation method adopted by most universities in China is GPA = score/10-5, and credit GPA = credit× GPA = credit× (score/10-5). Some universities also adopt the grading method of grade points, emphasizing the classification of grade points according to scores, such as Youshi University in China. Among them, 90- 100 points correspond to grade A, grade point 4.0, 85-89 points correspond to grade A-and grade point 3.7.